COMPARISON OF THE CRACK-GROWTH METHOD AND THE CRACK STRESS WHITENING ZONE METHOD FOR THE FRACTURE-TOUGHNESS DETERMINATION OF PHENOLPHTHALEIN POLY(ETHER KETONE)
Yc. Han et al., COMPARISON OF THE CRACK-GROWTH METHOD AND THE CRACK STRESS WHITENING ZONE METHOD FOR THE FRACTURE-TOUGHNESS DETERMINATION OF PHENOLPHTHALEIN POLY(ETHER KETONE), Die Angewandte makromolekulare Chemie, 225, 1995, pp. 131-138
Fracture toughness values of phenolphthalein poly(ether ketone) (PEK-C
) at 190 degrees C were determined by two different methods, i. e. the
conventional crack growth method and the crack stress whitening zone
method, which show consistent results. This indicates that the crack s
tress whitening zone method can be used to determine the crack initiat
ion of some polymers for which the blunting line concept is unsuitable
.